Original 1870s stereoview photograph of what I think is an English Pointer dog sitting in a chair. Could also be a German Short-haired Pointer. 7" x 3.5". Blank, clean back.

I think this might be a privately commissioned image, not a commercial / mass-produced image, if so there are probably very few around. The back is blank and there are no manufacturer imprints. Condition of this stereoview is excellent.